Gustav a



f1 lli-md l tait-5 GUSTAV A. XVEDEKIND AND ELB'IUTH .DUEBRG, )F NEV YORK, N. Y.

Letters Patent No. 85,042,

dctedvDecembcr 15, 1868 IMAPROVED BRNING--KILN To all whom tt may concern.' Beit known that we,' G Usmr A. WED'EKIND and HELMUTH DUEBERG, both of the city, county, and State of New .Yer-k, have invented a new and improved Kihl for burning brick and other articles and wedo hereby declare the following to be a1i1li,clear,and exact description thereof, which will enable thoscvskilled in the art to make and use the same, reference being had to the accompanying drawings, formingr part of this v speciiication, in which drawings- Figure l represents a horizontal section of this invention. Figure 2 is a longitudinal vert-ical section of a portion thereof, the line 'zo 1.1:, iig. i, indicating the plane of section. Y

' Figure 3 is a transverse section of the same, taken in the plane indicated by the line x, iifr. i.'

Similar letters indicate corresponding parts.

This invention relates to certain improvements on that class of kilns which areknown by the term provgressive kilns, and for which a patent was granted-to F. E. Hoffman, June 13, 1865.

Our present improvement consists in the arrangement,'within-a progressive kiln, of permanent perforated walls at each Aside of the tire-chamber, as hereinafter more fully described.

Our progressive kiln, as represented in figs. l, 2, and 3, is composed of a series of burning-chambers, A or A'; the. chambers A being covered by arches, while the chambers A' are open at the top, land provided with temporary covers c, of bricks, clay, or other suitable material, placed on the top of the material to be burned, with which said chambers are filled.

After the material contained in one of vthe chambers has/been burned and cooled, the cover c is removed, so that free access can be had to the interiorvof the burning-chamber, fon-the purpose of removing the burned material, and after the vchamber has been recharged, the cover is renewed.

'lhe chambers A, therefore, are open at the top during the time the material is 4brought incr taken out, and consequently it is much cooler therein, and more comfortable for the men working therein, than it isin the arched chambers..

Each of the chambers A4 is accessible by a door-way, b, in the outside wall of the-kiln, which door-ways, however, are not required for the open chambers A', espe-' cially-if the kiln is built underground.

The burning-Chambcrscan be temporarily separated from cach other by a movable partition, o, consisting of one or'more pieces of sheet-iron, or other suitable material. .lliis partition is inserted cithor through the door-ways b, or, in case the chambers are open at the top, from above.

B are the inrnacosor tirc-places, which are situated inside the burning-chainbcrs, and which receive the fuel either through the apertures in the top, or through openings e in the side wall of the kiln.

' partitions or in the arch of each chamber for'said purpose,

With open' chambers, the apertures (Z are to be left in the temporary cover.

The apertures d, as well the openings c, can bc hermetically closed, the former by suitable covers, the latter by doors.

According to the-kind of fuel, the furnaces are to be constructed in different ways.

For coal, an ashlpit covered with a grate maybe pro vided, which is not required for wood. v

lf petroleum is used as fuel, the bottom of thelfurnace is to be covered with a layer of sand or some other porous substance, which will absorb the petroleum, uu- .til it is consumed by burning. The petroleumis'introi duced. through the openings d in the top, by means off I a syringe, or an equivalent device.

.ihe furnaces or tire-places B are separatedfrom the burning-compartmcnts in the chambers, by perforated walls C, made of lire-brick, or other suitable material,'aml thereby the fuel is prevented from coming in directl contact with the articles to be-burned.

By this separation ofthe furnaces from the burningchambers, the quality oi' theburncd articlesisimprovixl, and the articles to be burned can be promiscuously thrown .into the burning-chambers, so as to save .the time heretofore required to arrange or set up said articles in rcgularpiles, and at the. same th'nethe progressive character of the kiln remains uncl'ianged.

The perforated vwalls C are either built up only'to about, half the height of the chambers, or they eX-V tend clear up to the top thereof, so as toprevent such material, which isduinped into` the chambers, fronr For lime-kilns, open cham-f v b ers are particularly adapted ,as they can be very easily rolling into the furnace.

lled with limestone from above. In' case the chambers of a lime-kiln are arched, a large opening is to be left Small holes, f, in the arches serve as loop-holes for inspecting the burning-process in the chambers.

Each chamber communicates, by flue, g, with a smoke-chamber, D, and chimney E. The fines" are provided with dampers 7i, whereby they can be opened or closedat will. r' l The chimney may be placed inside the kiln, as shown in the drawing, or outside thereof, in whichlatter case it must be connected with the smoke-chamber by a'ue, which may either be under or 4above ground.

In vorder to render the ope-ration of our kiln intelligiblc,we havennmbered the burning-chambers, 1v to 10. Now, suppose the bmning-chambers l, 2, 3, 4., and 5 are filled with fresh material, for instance, bricks or' limestone, ing the movable partition c, in case the kiln is constructed shown in l, 2, and 3.

The door- \vays b, of l, 2, 3, 4, and 5, are closed,and the damper-7l of chamber 5 is opened, all others being closed, and thc ash-pit of chamber' l` is opened.

When a the draught of air passes through the several chamchamber is separated from-(5,.by in'serttire is lighted in the furnace of chamber bers, l, 2, 3, 4,' 5, to the smoke-chamber and chimney, and thewaste heat, passing from chamber l through the succeeding chambers, selves to heat the material contained in these last-named chambers.

Then the material in chamberl is sulciently burned, fuel is fed into the furnace of chamber 2, which fuel is instantly ignited by the .waste heat of chamber 1. At the same time, chamber 6 has been filled with fresh material, and tl repartition c isiuserted between chambers (i and 'i'. Then the damper; h. of chamber 5 is closed, andthat of chamber (i opened, allowing the waste heat to pass, also, through chamber 6,' so as to heat the material contained therein.

The nlaterial contained in' chamber l being now exposed to a draught of cold air, is gradually cooled, while the air, in passing through the heated material in this chamber, becomes heated before it enters chamber2. ,l

`When the material inchamber 2 is burned, fuel isv introduced into thc furnace of chamber 3, and chamber 7 having been filled with fresh material, is annexed to the preceding chambers, by changing Vthe position of the movable partition lc, and by opening the damper h of chamber 7, and closing that of chamber 6.

4When the material in ehamber'3 is burned, fuel is' introduced into the furnace of chamber 4; chamber zi4 is annexed, and then thefnel is lighted in chamber 5, and chamber 9 is filled. l e

i 1l y that time the burned material contained in chamber 1 is sutliciently cooled to be taken out, while fresh material is introduced into chamber 10, and the draught of air passing through the burned material in the prei vious chamber, serves to cool the previously-burned material, and takes up the heat, so that it reaches' the 4 furnace of chamber 5 in a red-hot state.4

" of burned goods, and the filling in of fresh material,

goes on without il'lterruption. All the chambers of with fresh material to be burned, which is gradually. heated ;V another' part with burned materialthatis radually cooling olf, and in one chamber the process olgburning is just progressing, this chamber being situated between those containing `b'urned material and those containing fresh material. l

' Int-lie drawing, a kiln is shown containing ten burning-chambc1s, but it is obvious that this number can chambers is very large, fire may be kept in two or more interrupted as often by movable partitionsc.

or arranged in a straight or curved line of limited length. The operationof such limited kilns, of course, cannot be continuous.. After all the chambers of the' series have been filled with fresh material, a tire is started in the first chamber, and successively made to progress through the succeeding chambers, luntil it reaches the last one, where it is left to go out. When the burned goods have been taken out, and the chambers have been filled with fresh material, a new -lire .is to be started in the first chamber of thc series.

XVe are aware that the several parts composing our therefore, we do not wish to claim them, either singly o r in combination but ,A

What we do claim as new and of our invention, and desire to secure byLetteis Patent, is-

tember, '1868.

GUST. A. WEDEKIND. HELMUTH DUEBERG. Witnesses:

W. HAUFF, E. E. KASTENRUBER.

the liiln, except one or'two, are always lilled, one part be increased or diminished. If the number of burningchambers simultaneously, the sexies of chambers being' r The seriesl of burning-.chambers may also be limited, i

improvement are not, in themselves considered, news;

The arrangement, within a progressive kiln, of ,the 

